Home theater packages like the kind with the surround sound systems all in one box are great for small areas or apartments. Otherwise the more wattage you are using the more likley you will get a knock at your door from someone in a blue uniform. So unless you have a house or are capable of sound proofing your home theater room I would consider a home theater in a box.
You can find a myriad of homes around the nation and around the world. Some are big, several are small, and some are simply average. When you are searching.
If choosing a box kit I would consider the high end versions. If money is an issue then before you buy, I would at least try and find the system you are interested in and at least try it out. When you do don’t be shy about turning up the volume. Its your money and you have the right to know what your investment can do!